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Port plasma to the C128

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1437 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2002-10-03 19:19:25 +00:00
parent fc774b3006
commit 13f81d0377
2 changed files with 37 additions and 14 deletions
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4
samples/README
View File

@@ -41,8 +41,8 @@ Platforms: All systems that have the Commodore SID (Sound Interface
-----------------------------------------------------------------------------
Name: plasma
Description: A fancy graphics demo written by groepaz/hitmen.
Platforms: The program needs a VIC but has not been ported to / tested
on the C128, so it does currently run on the CBM510 and C64.
Platforms: The program needs a VIC, so it runs on the following systems:
C64, C128, CBM510
-----------------------------------------------------------------------------
Name: sieve

33
samples/plasma.c
View File

@@ -15,7 +15,7 @@
#if defined(__C64__)
#if defined(__C64__) || defined(__C128__)
# define SCREEN1 0xE000
# define SCREEN2 0xE400
# define CHARSET 0xE800
@@ -165,6 +165,14 @@ int main (void)
unsigned long fps;
unsigned fps10;
#if defined(__C64__)
unsigned char block;
#endif
#if defined(__C128__)
unsigned char block;
unsigned char initflag;
unsigned char graphflag;
#endif
clrscr ();
cprintf ("Making charset, mompls");
@@ -176,9 +184,19 @@ int main (void)
text = textcolor (COLOR_BLACK);
clrscr ();
#if defined(__C64__)
#if defined(__C64__) || defined(__C128__)
/* Move the VIC 16K block */
outb (&CIA2.pra, 0x00);
block = inb (&CIA2.pra);
outb (&CIA2.pra, (block & 0xFC) | ((SCREEN1 >> 14) ^ 0x03));
#endif
#if defined(__C128__)
/* Save and change some flags, so that kernal/basic interupt handler will
* not interfere with our routine.
*/
initflag = *(unsigned char*) 0xA04;
*(unsigned char*) 0xA04 &= 0xFE;
graphflag = *(unsigned char*) 0xD8;
*(unsigned char*) 0xD8 = 0xFF;
#endif
/* Remember the VIC address register */
@@ -205,9 +223,14 @@ int main (void)
/* Switch back the VIC screen */
outb (&VIC.addr, v);
#if defined(__C64__)
#if defined(__C64__) || defined(__C128__)
/* Move back the VIC 16K block */
outb (&CIA2.pra, 0x03);
outb (&CIA2.pra, block);
#endif
#if defined(__C128__)
/* Restore the flags */
*(unsigned char*) 0xA04 = initflag;
*(unsigned char*) 0xD8 = graphflag;
#endif
/* Fetch the character from the keyboard buffer and discard it */